Ensure that short command line options work

[fio.git] / init.c

diff --git a/init.c b/init.c
index dcb01934701e1a47d1ca9e9d084989c66eda1c77..bce284664c8f2e965f19e8db16dd3f813cc0d360 100644 (file)
--- a/init.c
+++ b/init.c
@@ -55,6 +55,8 @@ unsigned long fio_debug = 0;
 unsigned int fio_debug_jobno = -1;
 unsigned int *fio_debug_jobp = NULL;
 
+static char cmd_optstr[256];
+
 /*
  * Command line options. These will contain the above, plus a few
  * extra that only pertain to fio itself and not jobs.
@@ -1093,12 +1095,32 @@ static int set_debug(const char *string)
 }
 #endif
 
+static void fio_options_fill_optstring(void)
+{
+       char *ostr = cmd_optstr;
+       int i, c;
+
+       c = i = 0;
+       while (l_opts[i].name) {
+               ostr[c++] = l_opts[i].val;
+               if (l_opts[i].has_arg == required_argument)
+                       ostr[c++] = ':';
+               else if (l_opts[i].has_arg == optional_argument) {
+                       ostr[c++] = ':';
+                       ostr[c++] = ':';
+               }
+               i++;
+       }
+       ostr[c] = '\0';
+}
+
 static int parse_cmd_line(int argc, char *argv[])
 {
        struct thread_data *td = NULL;
        int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
+       char *ostr = cmd_optstr;
 
-       while ((c = getopt_long_only(argc, argv, "", l_opts, &lidx)) != -1) {
+       while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
                switch (c) {
                case 'a':
                        smalloc_pool_size = atoi(optarg);
@@ -1231,6 +1253,7 @@ int parse_options(int argc, char *argv[])
 
        log_info("%s\n", fio_version_string);
 
+       fio_options_fill_optstring();
        fio_options_dup_and_init(l_opts);
 
        if (setup_thread_area())